Display Assembly Film Structure for Narrow Black Region Reliability
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Solution Overview
Problem
As the width of the black region of liquid crystal panels in terminal devices decreases, the assembly reliability is reduced due to the direct adhesion method used, leading to a lower screen-to-body ratio and instability in the assembly of the liquid crystal panel.
Innovation Solution
A display assembly is created with a frame, a liquid crystal panel, a glass diffusion plate, and a film structure, where the film structure is attached between the liquid crystal panel and the glass diffusion plate, and both are integrated with the frame, providing indirect support to the liquid crystal panel and enhancing assembly reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If the black region width is reduced to increase screen-to-body ratio, then the aesthetic appearance and screen-to-body ratio are improved, but the assembly reliability deteriorates due to insufficient adhesion area
Solution Approach 1:
A film structure is introduced as an intermediary component between the liquid crystal panel and the glass diffusion plate. This film structure includes an adhesive layer that provides reliable adhesion, allowing the black region width to be reduced while maintaining assembly reliability through the mediator's bonding function.
Solution Approach 2:
The patent uses composite material structure combining the liquid crystal panel, film structure with adhesive layer, and glass diffusion plate. This composite approach creates a multi-layer assembly where each material contributes its specific properties, enabling both narrow black regions and reliable assembly through the adhesive layer in the film structure.
2Length of moving object
If the black region width is reduced from 6.5 mm to 0.9 mm, then the screen-to-body ratio is improved, but the adhesion area is reduced leading to assembly instability
Solution Approach 1:
The film structure with adhesive layer serves as a mediator that compensates for the reduced adhesion area. By introducing this intermediate bonding layer, the system maintains strong adhesion even when the black region width is reduced from 6.5 mm to 0.9 mm, as the adhesive layer provides distributed bonding across the interface.
Solution Approach 2:
The patent changes the bonding parameters by introducing a film structure with adhesive layer, which modifies the adhesion mechanism. This parameter change allows the system to achieve sufficient bonding strength with the reduced 0.9 mm black region width, transforming the adhesion from direct panel-to-diffusion-plate contact to a controlled adhesive-layer-mediated bonding.
3Device complexity
If direct adhesion method is used for the liquid crystal panel, then the device complexity is reduced, but the assembly reliability deteriorates with narrow black regions
Solution Approach 1:
The film structure acts as a mediator that resolves the contradiction between simplicity and reliability. While it adds a component layer, it provides a standardized, reliable adhesion solution that works consistently with narrow black regions, making the overall assembly process more reliable despite the additional element.
Solution Approach 2:
The patent employs a thin film structure with adhesive layer that can conform to the panel surface. This thin film approach provides reliable adhesion without significantly increasing device complexity, as the film can be integrated into the existing display stack and provides consistent bonding performance.
Data Source
AI summary
A display assembly includes: a frame; a liquid crystal panel installed in the frame; a glass diffusion plate attached to a light incident surface of the liquid crystal panel; and a film structure including one or more optical films and attached between the liquid crystal panel and the glass diffusion plate, wherein a light incident surface of the film structure faces the glass diffusion plate, a light exiting surface of the film structure faces the light incident surface of the liquid crystal panel, and the liquid crystal panel, the glass diffusion plate, and the film structure are attached together to form an integrated structure.